Parts and accessories
Machines and appliances for testing the hardness, strength, compressibility, elasticity or other mechanical properties of materials (for example, metals, wood, textiles, paper, plastics), and parts and accessories thereof: > Parts and accessories
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Products classified under HTS 9024.90.00
Rockwell Hardness Tester Indenter
Diamond or carbide-tipped indenter specifically designed for Rockwell hardness testing machines used on metals and alloys. It applies precise load to create an indentation for hardness measurement. Classified under HTS 9024.90.00 as a part of machines testing mechanical properties like hardness.
Vickers Hardness Tester Diamond Pyramid
Precision-ground diamond pyramid indenter for Vickers microhardness testers measuring metals, ceramics, and thin coatings. Creates standardized indentation under controlled load for optical measurement. HTS 9024.90.00 covers such specialized accessories for hardness testing appliances.
Extensometer Strain Gauge Clips
High-precision knife-edge clips for clip-on extensometers measuring elongation during tensile tests on metals and composites. Temperature resistant to 1200°C for hot testing. Parts for elasticity testing appliances under HTS 9024.90.00.
Compression Test Machine Spherical Seating
Self-aligning spherical seat for concrete cylinder compression testers ensuring uniform load distribution up to 2000kN. Per ASTM C39 standards. Accessory for compressibility testing machines in HTS 9024.90.00.
Creep Test Furnace Specimen Grips
High-temperature collet grips for creep rupture testing machines operating 20-1200°C measuring long-term material deformation. Inconel construction. Accessories for 9024 testers HTS 9024.90.00.
Universal Testing Machine Wedge Grips
Self-tightening wedge grips for tensile strength testing machines holding flat metal specimens up to 50kN load. Designed for universal materials testers evaluating strength and elasticity. Parts and accessories for 9024.10 machines classified in 9024.90.00.
Brinell Hardness Testing Ball Indenter
10mm tungsten carbide ball indenter for Brinell hardness testers measuring large forgings and castings. Creates large indentation measured optically for HB scale. Essential accessory for 9024 hardness testing machines under HTS 9024.90.00.
Charpy Impact Test Striker
Precision machined striker for Charpy pendulum impact testers measuring material toughness at various temperatures. Standardized V-notch geometry per ASTM E23. Classified as accessory for mechanical property testing machines in HTS 9024.90.00.
Paper Burst Tester Diaphragm Clamps
Precision clamps securing rubber diaphragm in Mullen burst testers for paper and board strength testing. Ensures leak-free specimen clamping per TAPPI T403. Accessory for compressibility testers classified HTS 9024.90.00.
Textile Yarn Tensile Tester Pneumatic Grips
Pneumatic side-action grips for yarn strength testers preventing slippage during high-speed tensile tests up to 5000N. Designed for textile fibers and filaments. Parts for 9024.80 textile testers under HTS 9024.90.00.
Flexural Bend Test Fixture
Three-point bend test fixture for plastics and composites flexural strength testing per ASTM D790. Adjustable span with precision rollers. Classified as accessory for mechanical property testing appliances HTS 9024.90.00.
Torsion Test Machine Grip Adapter
Quick-change adapter connecting tubular specimens to torsion testing machines measuring shear modulus. For metals and composites up to 5000Nm torque. Parts for 9024 mechanical property testers HTS 9024.90.00.
Rubber Durometer Calibration Block
NIST-traceable test blocks (30A, 50D, 90A Shore scales) for calibrating durometers testing rubber/plastics hardness. Micro-ISO 48 compliant. Accessory for hardness testers classified HTS 9024.90.00.
Drop Weight Tear Test Striker
Pressurized striker assembly for DWTT machines testing pipeline steel fracture properties per API 5L3. High-velocity impact design. Parts for mechanical property testing under HTS 9024.90.00.
Fatigue Test Clip-On Extensometer Side Pins
Ceramic-coated side pins for high-cycle fatigue extensometers maintaining alignment during millions of strain cycles. For metals fatigue testing. Precision parts for 9024.90.00 mechanical testers.